The Underdog Predict promo code is SOUTH. Sign up, make a first-time deposit, trade at least $5 in eligible prediction-market contracts, and receive a 50% first-time deposit match worth up to $1,000 in bonus funds, plus access to Keep Your Million, Underdog’s free-to-play survival game. This week’s NFL markets are live, making it ideal to trade the Seattle Seahawks and Denver Broncos matchup. Get signed up here.
Underdog Predict (also referred to as UDX, at underdogexchange.com) is a prediction-market exchange where users trade contracts on real-world NFL outcomes at market prices that reflect implied probability. It is not a sportsbook, and it operates under CFTC regulatory oversight. This offer is available to eligible new users meeting age requirements in a participating state, with full availability details covered further down the page.
Is There an Underdog Predict Promo Code for Seahawks vs. Broncos?
Yes.
Eligible new users who sign up with Underdog promo code SOUTH receive a 50% first-time deposit match up to $1,000 in bonus funds, plus Keep Your Million.
To successfully claim this offer, register your new account using promo code SOUTH, make a first-time deposit of $5 or more, and execute a trade of at least $5 in eligible prediction-market contracts. The 50% match is credited in bonus funds and applies strictly to your first-time deposit only. Terms apply.
Trading involves risk, including total loss on positions. Trading decisions and their consequences are your sole responsibility. Nothing on underdogexchange.com constitutes a recommendation, solicitation, or offer to buy or sell any financial instrument. UDX is subject to CFTC regulatory oversight. Promotion issued by affiliate.
What Is the Underdog Predict Promo Code and How Does It Work?
The Underdog Predict promo code is SOUTH.
Verified first-hand, this welcome offer allows eligible new users to receive a 50% match on their first-time deposit worth up to $1,000 in bonus funds. To qualify, execute at least $5 in eligible prediction-market contract trades, which can be reached with a single trade or across multiple trades. Once qualified, bonus funds are typically credited within 12-24 hours. Terms apply.
What Is Keep Your Million?
Keep Your Million is Underdog’s free-to-play survival game.
All new users and most existing users are eligible for Keep Your Million, while the 50% deposit match is for eligible new users only who meet the age requirement and live in a participating state.
- Pick a question – for example, whether a quarterback in this matchup finishes higher or lower than a stated passing-yardage number.
- Split your million – drag the slider to divide a virtual $1,000,000 pot of bonus funds between Higher and Lower; all of it must be allocated.
- Lock it in – submissions are final once the game starts and cannot be changed.
- Keep your winnings – when the question settles, you keep whatever was allocated to the winning side, and that becomes your pot for the next question.
- Run it back – continue through up to 20 questions and survive all 20 to cash out whatever remains in Underdog bonus funds.
How Do You Redeem the Underdog Predict Promo Code?
The promo code is SOUTH.
Unlock the welcome offer in four steps that take only a few minutes before the Seattle Seahawks vs. Denver Broncos matchup kicks off.
- Confirm eligibility and have your details ready – You must be a new Underdog Predict customer, meet the age requirement, be located in a participating state, and be able to complete standard identity verification (KYC) with your legal name, address, date of birth, and the last four digits of your SSN.
- Sign up with promo code SOUTH – Create and register your account at underdogexchange.com and enter the code during registration so the deposit match is attached to the account.
- Make a first-time deposit of at least $5 – Use any available secure deposit method. The welcome offer matches 50% of this first-time deposit, up to $1,000 in bonus funds.
- Trade at least $5 in eligible prediction-market contracts – Buy or sell contracts tied to an outcome in this Seattle Seahawks vs. Denver Broncos matchup or another eligible market, keeping in mind that contract prices reflect the market-implied probability. Once the $5 threshold is met, the deposit match is credited in bonus funds, typically within 12-24 hours.
Terms apply, availability is limited to participating states, and trading involves risk including total loss on positions.
Popular Underdog Predict NFL Markets for Broncos vs. Seahawks
Game Winner Market
The following table displays the win probability for the full-game outcome between the Denver Broncos and Seattle Seahawks. The Seattle Seahawks enter this matchup as the favorite, leaving the Denver Broncos as the underdog.
What a $5 Position Returns
Trading the full-game outcome presents different risk-reward profiles based on market-implied probabilities. A $5 position on the favored Seattle Seahawks at -145 (an implied probability of roughly 59.2%) returns an $8.45 total payout if they win. Conversely, a $5 position on the underdog Denver Broncos at +123 (about a 44.8% implied probability) yields a total return of $11.15 if the outcome settles in their favor.
Form and Trends to Trade On
The Denver Broncos are 3-2 this season and have won both of their home games so far, possessing a dominant 16-2 straight-up record at home over their last 18 games. The Seattle Seahawks are also 3-2, splitting their first two road matchups 1-1, but have won their last two games against the Denver Broncos while carrying an impressive 16-2 straight-up road record over their last 18 games.
Other Trending Markets
Prediction-market traders are also eyeing other high-volume NFL markets on the upcoming slate. The full-time total points contract for the Kansas City Chiefs vs. Los Angeles Chargers is currently drawing significant interest with $7.8K in 24-hour volume. Additionally, the full-time total points contract for the Atlanta Falcons vs. Chicago Bears is seeing heavy action, accumulating $3.9K in recent volume.
Bonus funds from the 50% first-time deposit match, up to $1,000, can be applied across eligible NFL markets, and trading involves risk including total loss on positions.
How Does Underdog Predict Work?
Underdog Predict is a prediction-market exchange, not a sportsbook.
Operating at underdogexchange.com, Underdog Predict (UDX) allows users to buy or sell contracts tied to a real-world NFL outcome. Each contract’s market price directly reflects the implied probability of that specific outcome occurring. As other participants trade on the platform, these prices dynamically move in response to the market, and your positions can be held until the event officially settles.
Unlike traditional platforms, there is no house taking the other side of your position. You are trading exclusively against other market participants. UDX operates as a regulated venue subject to CFTC regulatory oversight rather than operating under state gaming licenses. Trading involves risk, including total loss on positions. Nothing on the platform constitutes a recommendation, solicitation, or offer to buy or sell any financial instrument.
Where Can You Trade With Underdog Predict?
Availability is limited to participating states where UDX operates, and eligible users must also meet the minimum age requirement.
While the platform is widely accessible, some states are entirely excluded from trading. The definitive list of participating and excluded states is shown during the sign-up process and is always available on underdogexchange.com. Users should confirm their local eligibility through the platform before attempting to create an account or process a deposit.
The regulatory status of prediction markets is being actively contested in some jurisdictions. With legal challenges and regulatory reviews currently ongoing, state availability can change at short notice. Check the in-app eligibility list for current availability.
Why the Underdog Predict Promo Code Is the Best Choice for Seattle Seahawks vs. Denver Broncos
Promo code SOUTH delivers the largest verified new-user value of any Underdog Predict offer currently available.
Checked first-hand, this welcome offer ensures new users receive exactly what is outlined in the terms: a 50% match on your first-time deposit worth up to $1,000 in bonus funds, credited after executing $5 in eligible contract trades, plus access to Keep Your Million at no cost.
Funding an account before kickoff allows you to put bonus funds to work on live markets for this matchup, including the game-winner market where the Seattle Seahawks hold a 56.8% win probability against the Denver Broncos at 43.2%. Eligible new users only; age and participating-state requirements apply. Terms apply, and trading involves risk including total loss on positions.
Underdog Predict Promo Code FAQ
What is the Underdog Predict promo code?
The promo code is SOUTH.
Entering this during registration secures a 50% match on your first-time deposit, awarding up to $1,000 in bonus funds. Additionally, the offer unlocks complimentary access to Keep Your Million, the platform’s survival game where players allocate virtual capital across sports-related questions.
Is the Underdog Predict promo code available to new users only?
Yes.
The first-time deposit match is strictly reserved for eligible, first-time customers who meet the age and participating-state requirements. Meanwhile, the Keep Your Million game remains accessible to all newly registered users and the majority of existing account holders.
How much do you need to deposit and trade to claim the offer?
A minimum of $5.
You must complete a first-time deposit of at least $5 and execute $5 worth of eligible contract trades, either through one transaction or spread across multiple positions. After meeting this requirement, the 50% match, capped at $1,000, is typically issued in bonus funds within 12-24 hours.
Is Underdog Predict a sportsbook?
No.
It operates entirely as a prediction-market exchange under CFTC regulatory oversight. Instead of playing against a traditional house, participants trade real-world event contracts directly with other users. The dynamic market prices for these contracts shift continuously to reflect the implied probability of an outcome happening.
Can you use the promo code on this week’s NFL matchup?
Yes.
Once credited, your bonus funds can be utilized to trade contracts on the upcoming Denver Broncos versus Seattle Seahawks game. You can take a position on the full-game winner market or explore various other eligible NFL markets available on the exchange platform.
